subsubsection3-4plus-4minus-4-1.5em plus-0.22em minus-0.1emEvaluation Metrics
For comparison, we report the performance measured by automatic language evaluation metrics: BLEU-\(n\)  [1]}, METEOR [2]}, Rouge-L [3]} and CIDEr [4]}. For example, the BLEU-\(n\)  measures \(n\) -gram precision of the candidate caption.
